ngb-popover-window {
  &.bs-popover-top .arrow,
  &.bs-popover-bottom .arrow {
    left: 50%;
    margin-left: -5px;
  }

  &.bs-popover-top-left .arrow,
  &.bs-popover-bottom-left .arrow {
    left: 2em;
  }

  &.bs-popover-top-right .arrow,
  &.bs-popover-bottom-right .arrow {
    left: auto;
    right: 2em;
  }

  &.bs-popover-left .arrow,
  &.bs-popover-right .arrow {
    top: 50%;
    margin-top: -5px;
  }

  &.bs-popover-left-top .arrow,
  &.bs-popover-right-top .arrow {
    top: 0.7em;
  }

  &.bs-popover-left-bottom .arrow,
  &.bs-popover-right-bottom .arrow {
    top: auto;
    bottom: 0.7em;
  }
}
